Cop attachment for loom shuttles



Feb. 3, 1925. 1,525,315

P. NATHANSON ET AL COP ATTACHMENT FOR LO OM SHUTTLES Filed June 50, 1925 anvwucow;

Patented Feb. 3, 1925.

UNITED STATES PATENT OFFICE.

PHILIP NATHANSON AND JACOB SONTAG, OF ALLENTOWN, PENNSYLVANIA.

GOP ATTACHMENT FOR LOOM SHUTTLES.

Application filed June 30, 1923. Serial No. 648,780.

able those skilled in the art to which the invention appertains to utilize the same.

Our improvement relates to means for mounting cops, so called, on the spindles of, and in, shuttles used in looms, and particularly looms used in the weaving of silk in a manner well known in the art,said cops being substitutes for the standard quills or wooden bobbins primarily intended for use in shuttles of this type of appara.tus,and the invention consisting essentially of a basic coupling sleeve adapted to fit on the shuttle spindle and engage with the retaining shoulders on the latter, and also adapted to fit tightly within the rear portion of the hollow cop, whereby the latter functions as the equivalent of the standard shuttle quill or spool, all as hereinafter fully set forth.

In the accompanying drawings we exemplify a. practical embodiment of the essential features of our invention, although we do not limit ourselves to the identical form 1 and construction .of parts shown, since modifications 1n minor details, and equivalent mechanical expedlents, may be resorted to with like result, and without departing from the spirit and intent of our invention in this respect.

With this understanding,

Fig. 1, is a face view of a shuttle of the silk-loom type, without the quill or bobbin usually employed in connection therewith;

Fig. 2, is an elevation of a quill spool or bobbin such as designed primarily for thereof, on the same scaleas that of Fig. 5;

Fig. 8, is. an elevation of a cop bobbin and wind as received for use in the shuttle;

Fig. 9, is a view of a cop bobbin mounted on one of our coupling sleeves and positioned in the shuttle, the silk wind of the bobbin being omitted;

Fig. 10, is a sectional elevation upon an enlarged scale, illustrating the conjunctive combination of a cop bobbin with one of our couplingsleeves.

As is well known in the art of silk weaving, the shuttles S, are adapted primarily to accommodate the standard wooden quill bobbin g, indicated'in Fig. 2, of the drawing, being formed with a pivotally mounted and longitudinally split spindle 8, adapted to fit tightly within the tubular central portion of said quill bobbin g, the base of which is formed with an annular shoulder g, which fits in between the opposed jaws s, s, of the shuttle S, in such manner that the bobbin is held firmly against longitudinal movement or play upon said spindle s.

The cop bobbins is, are also well known in the art, being usedas substitutes for the standard wooden quill bobbins 9, upon occasion. They are made of paper or equivalent light weight material, and are relatively cheap as compared with the wooden quill bobbins which cost approximately four and onehalf cents a piece, 'whereas the cop bobbins is, cost only approximately forty-five cents a pound and average over two hundred cops to the pound, so that they are cheap enough to. be discarded after first use,it being understood that the quill bobbins g, are of substantial structure and capable of repeated use to an indefinite extent.

Furthermore, the cop bobbins, on account of their light weight, cost much less for transportation between mills, etc., than the heavier quill bobbins g, which are rewound upon occasion, so that cost of return transportation has frequently to be taken into account as well as the danger of breakage or loss in transit, whereas the unwound cop bobbins are, under ordinary conditions of use, not alone worth the cost of transportatiom Heretofore, where cop bobbins it, have shown in Figs. 1 and 9, of the drawings, a wedge has been inserted in the longitudinal split 8 of the spindle s, to expand the said spindle s, to fit tightly within the cop bobbeen used in quill bobbin shuttles, such as bin tube, which is usually of truncated conoidal form. Or, in lieu of thus adapting the quill bobbin spindle s, as a mount for a cop bobbin k, the said spindle 8, may be replaced in the shuttle S, by a cop spindle of special construction, but this involves considerable time and labor, and shortens the life of the shuttle, as the frequent removal and replacement of the trunnion pins enlarges the pin holes, so that the pins are liable to fall out during the use of the shuttle, thus not only rendering the shuttle Worthless, but otherwise resulting in serious loss and damage. Another disadvantage of changing to a special cop spindle is that such spindles cannot be used for any other form of bobbin.

We obviate these diificulties by our coupling sleeve C. consisting of a tubular stem 0, the forward portion of which is slitted to form expansible tongues 0, and the rear of which is formed with a basic annular shoulder 0 adapted to fit between the spring jaws s, s, of the shuttle S, as shown in Fig. 9, of the drawings.

In use, the tubular stem 0, of our coupling sleeve C, is inserted in the rear end of a cop bobbin k, as shown more particularly in Fig. 10, of the drawings, and the coupling sleeve C, and cop bobbin is, then to- 'gether positioned on the spindle s, of the shuttle, the elastic resilient slit-ted portion 8 of said spindle, expanding the sleeve tongues a, so that the latter bear forcefully against the adjacent inner surface of the cop bobbin, creating sufiicient frictional re sistance to hold both bobbin la, and coupling C, together practically as a unitary structure for all practical purposes, and so that the spring jaws s, contacting with the basic annular shoulder 0 of the coupling sleeve C, hold the cop bobbin is, securely against longitudinal movement as efiectually as the wooden quill bobbin 9, is held under ordi nary conditions of use.

Our cop bobbin coupling sleeve C, is sinr ple and inexpensive, and can be manipw lated with facility, being readily attached to or disconnected from the cop bobbin, and easily placed upon or removed from the spindle, and by its use said cop bobbin is rendered as effectual as the standard quill bobbin. Furthermore, its use does not im pair the shuttle in any particular, said shuttle and its spindle remaining intact, and

equally adapted to the use and requirements of both quill and cop bobbins What we claim as our invention and de sire to secure by Letters Patent is,

1. In combination with a shuttle provided with a hinged bobbin spindle of the character designated, a coupling sleeve for hollow cop bobbins adapted to fit within one end of a cop bobbin and over the shuttle spindle, said coupling sleeve being formed with an expansible portion for contactual engagement with the interior surface of a cop bobbin, substantially in the manner and for the purpose set forth.

2. In combination with a shuttle provided with a hinged bobbin spindle of the character designated, a coupling sleeve for hollow cop bobbins adapted to fit within one end of a cop bobbin and over the shuttle spindle, said coupling sleeve being formed with an expansible forward portion for contactual engagement with the interior surface of a cop bobbin, and with a shouldered base f r engagement with the bobbin-retaining jaws, substantially in the manner and for the purpose described.

' PHILIP NATHANSON.

JACOB SONTAG.

Witnesses:

MINNIE SoN'rAc,

E. BETA WEAVER. 

